<!DOCTYPE html>
<html lang="zh-CN">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>5并集选择器</title>
  <style>
    div,
    p,
    .pig li{
      color: pink;
    }
  </style>
</head>

<body>

  <div>熊大</div>
  <p>熊二</p>
  <span>光头强</span>
  <ul class="pig">
    <li>小猪佩奇</li>
    <li>猪爸爸</li>
    <li>猪妈妈</li>
  </ul>
</body>

</html>